ATELEUS. 175 



the median dorsal region overlaid with russet and black; a median 

 black line from between eyes to crown; narrow black lateral lines to 

 occiput; white spots above eyes; sides of neck grayish; underparts 

 pale ochraceous-buff; tail like upperparts above at base, root black; 

 beneath chestnut on proximal third, remainder black; hands and feet 

 black. Ex type in United States National Museum. 



Measurements. Total length, 683; tail, 400; foot, go. Skull: 

 Greatest length, 60.9; Hensel, 39.8; zygomatic breadth, 37.5; inter- 

 temporal width, 5.2; mastoid width., 33.8; length of nasals, 10; pal- 

 atal length, 31.5; length of upper molar series, 14.8; length of 

 mandible, 37.3; length of lower molar series, 15.8. Ex type in 

 United States National Museum. 



Subfamily Cebinae. 



Genus Ateleus. 



Ateleus pan Schlegel. 



Ateles (!) pan Schlegel, Mus. Hist. Nat. Pays-Bas (Simla) 7, 

 1876, p. 180. 



Ateleus pan Elliot, Rev. Primates, II, -1913, p. 41. 

 Schlegel 's Spider Monkey. 



Type locality. Coban, Guatemala. 



Geogr. Distr. Volcano of Orizaba, State of Vera Cruz, into Guate- 

 mala. 



Genl. Char. Similar to A. belzebuth, but the yellowish white on 

 inner side of arms and legs very restricted; no white on the cheeks. 



Color. Face black; head, shoulders, arms, hands, legs and feet 

 black or blackish brown; rump brown, hairs tipped with shining 

 golden; underparts yellow; reddish line on border of flanks; inner 

 side of arms to elbows and legs to ankles yellowish white ; tail brownish 

 black. Ex type in Ley den Museum. 



Measurements. Total length, 1.120; tail, 700; foot, 150. Skull: 

 Total length, 1.022; interorbital width, 57.1; occipito-nasal length, 

 99.3; Hensel, 66; zygomatic width, 63.5; median length of nasals, 

 15.4; palatal length, 27.6; length of upper molar series, 24.3; length of 

 mandible, 60; length of lower molar series, 27.4. Ex type in Ley den 

 Museum. 



Ateleus tricolor Hollister. 



Ateles (!) tricolor Hollister, Proc. Biol. Soc. Wash., XXVII, 1914, 

 p. 141. 



